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Active Energy Meter

Active Energy Meter

PS7777-series digital active/reactive power meter Summary&application: PS7777-series digital active power meter is the new generation of programmable intelligent instrument, integrated with measurement, alarming, transmission and communication, mainly applied into real-time measurement and...

Product Details

PS7777-series digital active/reactive power meter

Summary&application: 

PS7777-series digital active power meter is the new generation of programmable intelligent instrument, integrated with measurement, alarming, transmission and communication, mainly applied into real-time measurement and indication for the active power in the three phase electrical circuit, conducting limited alarming output for transmission output towards electrical data according to the set measured value, realizing networking through RS485 communication interface and the host computer.


1.Main functions and characteristics

◆It can measure and display single/three phase active power value with digital direct reading method.

◆Extendible for analog quantity output function, transmitting specification of 4~20mA, 0~20mA, 0~10mA which is optional.

◆Extendible for switch quantity output function for the relay, realizing upper/lower-limit alarming output.

◆Extendible for RS-485 communication interface, adopting the standard ModBus-RTU communication protocol and the baud rate can be set.

◆Parameters including current/voltage ratio of the meter, upper/lower-limit alarm value, alarming return difference, communication address of the meter, baud rate, transmitting output mode, transmitting output range, etc. are programmable.


2.Model specification and selection description:

(Unit: mm)

Model

Measurement display

T(communication)
     RS485 interface

K
     Switch quantity output

B analog quantity    output

External size

Display mode

Single phase active power

Three phase three wire active power

Three phase four wire active power

PS7777-1



@

@

@

96×48

 

 

 

 

LED display

PS7777-1Y



@

@

@

96×48

PS7777-1S



@

@

@

96×48

PS7777-2



@

@

@

72×72

PS7777-2S



@

@

@

72×72

PS7777-3



@

@

@

96×96

PS7777-3Y



@

@

@

96×96

PS7777-3S



@

@

@

96×96

PS7777-5



@

@

@

120×60

PS7777-5S



@

@

@

120×60

PS7777-6



@

@

@

80×80

PS7777-6S



@

@

@

80×80

PS7777-7



@

@

@

160×80

PS7777-7Y



@

@

@

160×80

PS7777-7S



@

@

@

160×80

PS7777-8



@

@

@

120×120

PS7777-8Y



@

@

@

120×120

PS7777-8S



@

@

@

120×120


Note:

1.●means the intrinsic functions of the instrument

2.@means extendible corresponding optional functions of this series of instruments.

3.The size code with 2, 5, 6 can only be configured with any 2 types of function modules, the size code with 1, 3, 7, 8 can be configured with any of 3 types of function modules.

4.All the above models of instrument can be made corresponding reactive power meter (PQ7777 series).


3. Main technical performance and parameters:

Technical parameters

index

Wiring mode

Single phase, three phase three wire, three phase four wire

 

 

Input

 

Voltage

Rated value

AC100V, 220V, 380V

Overload

Continuous: 1.2 times, instant: 2 times/1s

Consumption

≤1VA(each phase)

Resistance

100V(about 120K), 220V(about 400K), 380V(about 600K)

 

Current

Rated value

AC1A, 5A

Overload

Continuous: 1.2 times, instant: 10 times/5s

Consumption

≤0.5VA (each phase)

Resistance

<20mΩ(each phase)

Measuring rang of the frequency

45Hz-65Hz

 

 

 

 

 

Output

 

 

Display mode Measuring accuracy

5-digit LED display, reactive power displays &ldquo;-&ldquo;
Voltage  Class  0.5 Resolution 0.1V
Current  Class  0.5 Resolution 0.001A
Active power   Class 0.5 Resolution 1W
Reactive power Class 1.0 Resolution 1var
The unit can switch automatically, the decimals shift    automatically

Display range

0~9999MV(Mvar), display &ldquo;----&ldquo; when out of the display    range

 

Communication

Mode

RS-485

Protocol

MODBUS-RTU

Baud rate

1200bps, 2400bps, 4800bps, 9600bps, 19200bps, assumed to be 9600bps

Switch quantity output

Upper/lower limit alarm with the same one relay output, contact capacity:AC250V/2A, DC30V/2A

Analog quantity output

DC0mA~10mA, DC0mA~20mA, DC4mA~20mA, Class 0.5, output    overload≤500Ω, the voltage output can be custom-made

Working power supply

Range

AC/DC85V~264V

Consumption

<5VA


Note: 

The items marked * are optional, which shall be specified by the customers when ordering.


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